CN104777097A - FRP-concrete interface adhesive property testing device and method - Google Patents

FRP-concrete interface adhesive property testing device and method Download PDF

Info

Publication number
CN104777097A
CN104777097A CN201510209463.3A CN201510209463A CN104777097A CN 104777097 A CN104777097 A CN 104777097A CN 201510209463 A CN201510209463 A CN 201510209463A CN 104777097 A CN104777097 A CN 104777097A
Authority
CN
China
Prior art keywords
frp
hydraulic jack
girder steel
adhesive property
test
Prior art date
Application number
CN201510209463.3A
Other languages
Chinese (zh)
Inventor
袁娇娇
许兰兰
火映霞
侯新宇
Original Assignee
江苏城市职业学院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 江苏城市职业学院 filed Critical 江苏城市职业学院
Priority to CN201510209463.3A priority Critical patent/CN104777097A/en
Publication of CN104777097A publication Critical patent/CN104777097A/en

Links

Abstract

The invention discloses an FRP-concrete interface adhesive property testing device which comprises an outer framework, a hydraulic jack, a force sensor, a test block, a computer, a hydraulic oil pump and a static state signal test analysis system. The testing method comprises the steps that a concrete test piece is manufactured, fiber cloth piece materials are made to adhere to the appropriate position of the surface of the test block, and a strain gage is made to adhere to the surface of the fiber piece materials before testing; during testing, a hydraulic oil source of the jack controls vertical loading; vertical loads are applied to the test block through the hydraulic jack, and the outer framework bears counterforce in a self-balance mode; the force sensor is connected with the static state signal test analysis system through a signal line, the strain gage is connected with the static state signal test analysis system through a wire, the output end of the static state signal test analysis system is connected with the computer, and therefore the FRP-concrete interface adhesive property is tested. The FRP-concrete interface adhesive property testing device is simple in structure, convenient to disassemble and applicable to testing construction site FRP-concrete interface adhesive property, and the number of needed materials and devices is small.

Description

Measure proving installation and the method for testing of FRP-concrete interface adhesive property

Technical field

The present invention relates to a kind of proving installation and the method for testing that measure FRP-concrete interface adhesive property, belong to concrete construction field.

Background technology

In field of civil engineering, reinforced concrete structure is along with the time is aging by generating material, structural damage.So, in order to ensure the security of damaged structure, the reinforcement technique of damaged structure must be studied, its performance is promoted.Current reinforcement means mostly adopts fiber cloth or steel plate to reinforce.A large amount of experimental studies shows, adopts FRP(fibre reinforced composites) reinforced concrete structural element reinforced, its failure mode is not often that FRP is pulled off, the interface delaminating damage that deficiency causes but FRP and concrete interface bond.The concrete interfacial adhesion of FRP-ensures the cooperative basis of bi-material, and therefore the result of study of FRP-concrete interface performance can be provided fundamental basis for project planner.

What current specification adopted is the adhesive property just drawing test to measure fiber cloth and concrete interface.From stressed angle, beam test meets true stressing conditions most.Beam test loads complicated, lacks structure simple, the charger of convenient disassembly.

Summary of the invention

The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, provides a kind of structure simple, the proving installation of the mensuration FRP-concrete interface adhesive property of easy accessibility.

For solving the problems of the technologies described above, the technical solution used in the present invention is: the proving installation measuring FRP-concrete interface adhesive property, comprises outside framework, hydraulic jack, hydraulic oil pump and test specimen, force snesor, stationary singnal detecting and analysing system and computing machine; Described outside framework is made up of left girder steel, right girder steel, upper girder steel and lower girder steel; Described lower girder steel is installed moveable hinge bearing B; Described hydraulic jack is installed on described moveable hinge bearing B, and hydraulic jack is connected with hydraulic oil pump by oil pipe; Installing force sensor in described hydraulic jack; This force snesor is connected with stationary singnal detecting and analysing system by signal wire; Moveable hinge bearing A is installed in described test specimen upper end, and test specimen is arranged between moveable hinge bearing A and hydraulic jack;

Described surface of test piece pastes fibre plate; Fibre plate surface mount foil gauge; Foil gauge is connected with stationary singnal detecting and analysing system by wire; The output terminal of stationary singnal detecting and analysing system is connected with computing machine.

Further, described outside framework is formed by connecting by high-strength bolt by left girder steel, right girder steel, upper girder steel and lower girder steel.

Further, described moveable hinge bearing A is provided with the steel cushion block for the protection of upper girder steel.

Further, described proving installation is provided with 2 moveable hinge bearing A, and 2 moveable hinge bearing A are separately positioned on the two ends of test specimen.

Further, in the middle part of test specimen, gap is established in incision.

Further, the width of described gap is 49-52mm, and the degree of depth is 48-52mm.

Further, the width of gap is 50mm, and the degree of depth is 50mm.

Another object of the present invention is to provide a kind of method of testing adopting the proving installation measuring FRP-concrete interface adhesive property, the method comprises the steps:

The preparation of (a) test specimen: the concrete sample of making, concrete sample surface mount fibre plate;

(b) assembling charger: moveable hinge bearing B is placed on lower girder steel, hydraulic jack is placed on moveable hinge bearing B, to hydraulic jack installing force sensor, the test specimen that need test is arranged between hydraulic jack and moveable hinge bearing A, steel cushion block is placed on moveable hinge bearing A top, promoting hydraulic jack makes steel cushion block touch girder steel, controlled loading, makes hydraulic jack only bear the deadweight of test specimen;

(c) connecting test device: at the fiber cloth surface mount foil gauge of concrete test block, foil gauge is connected with stationary singnal testing and analyzing system by wire; Force snesor is connected with stationary singnal detecting and analysing system by signal wire; Stationary singnal detecting and analysing system output terminal is connected with computing machine;

D () tests: to hydraulic jack load application, open stationary singnal testing and analyzing system, and zeroing, by the strain stress of test block surface fiber sheet in Static Test and Analysis system log (SYSLOG) loading procedure (t)and corresponding vertical load P (t);

E () is according to ε (t)and P (t)obtain load-displacement curve, test completes.

Beneficial effect of the present invention: proving installation of the present invention overcomes existing beam coomb's test Coomb and loads complicated defect, meets the true stressing conditions of FRP-concrete interface most, structure is simple, convenient disassembly.Material needed for method of testing of the present invention and instrument few, can test at the scene of building, be applicable to working-yard research FRP-concrete interface performance.

Accompanying drawing explanation

Fig. 1 is the single unit system figure of proving installation of the present invention.

In figure: 1-test specimen; 2-fiber cloth; 3-gap; 4-moveable hinge bearing A; 5-steel cushion block; 6-force snesor; 7-hydraulic jack; 8-oil pipe; 9-hydraulic oil pump; The upper girder steel of 10-; The left girder steel of 11-; The right girder steel of 12-; Girder steel under 13-; 14-high-strength bolt; 15-foil gauge; 16-signal; 17-wire; 18-computing machine; 19-moveable hinge bearing B; 20-outside framework; 21-stationary singnal test analysis system.

Embodiment

Below in conjunction with accompanying drawing, technical scheme of the present invention is elaborated.

Embodiment 1

Be illustrated in figure 1 a kind of proving installation measuring FRP-concrete interface adhesive property of the present invention, comprise outside framework 20, hydraulic jack 7, hydraulic oil pump 19 and test specimen 1, force snesor 6, stationary singnal detecting and analysing system 21 and computing machine 18; Outside framework 20 is made up of left girder steel 11, right girder steel 12, upper girder steel 10 and lower girder steel 13; Lower girder steel 13 is installed moveable hinge bearing B4; Described hydraulic jack 7 is installed on described moveable hinge bearing B4, and hydraulic jack 7 is connected with hydraulic oil pump 9 by oil pipe 8; Installing force sensor 6 in hydraulic jack 7; This force snesor 6 is connected with stationary singnal detecting and analysing system 21 by signal wire 16; Moveable hinge bearing A4 is installed in test specimen 1 upper end, and test specimen is arranged between moveable hinge bearing A4 and hydraulic jack.

During test, the hydraulic oil source 9 of hydraulic jack 7 can control vertical loading.Apply vertical load by hydraulic jack 7 pairs of test blocks 1, bear counter-force by outside framework 20 self-equilibrating.

Test specimen 1 surface mount fibre plate 2; Fibre plate 2 surface mount foil gauge 15; Foil gauge 15 is connected with stationary singnal detecting and analysing system 21 by wire 17; The output terminal of stationary singnal detecting and analysing system 21 is connected with computing machine 18, thus test FRP-concrete interface adhesive property.

In the present embodiment, outside framework 20 is formed by connecting by high-strength bolt 14 by left girder steel 11, right girder steel 12, upper girder steel 10 and lower girder steel 13, can bear hydraulic jack 7 when loading, and its counter-force given by moveable hinge bearing 19, realizes counter-force self-equilibrating.

In the present embodiment, moveable hinge bearing A4 is provided with the steel cushion block 5 for the protection of upper girder steel 10, is unlikely to damage girder steel 10 when ensureing that concrete sample destroys.

In the present embodiment, proving installation is provided with 2 moveable hinge bearing A4, and 2 moveable hinge bearing A4 are separately positioned on the two ends of test specimen 1.

In the present embodiment, in the middle part of test specimen 1, gap 3 is established in incision.

In the present embodiment, the width of gap 3 is 49-52mm, and the degree of depth is 48-52mm; Preferably, the width of gap 3 is 50mm, and the degree of depth is 50mm.

Adopt proving installation of the present invention can measure the Complete Curve of load and strain.

Embodiment 2

The proving installation adopting embodiment to go measures the method for testing of FRP-concrete interface adhesive property, and the method comprises the steps:

The preparation of (a) test specimen: the concrete sample of making, concrete sample surface mount fibre plate 2;

(b) assembling charger: moveable hinge bearing B4 is placed on lower girder steel 13, hydraulic jack 7 is placed on moveable hinge bearing B19, to hydraulic jack 7 installing force sensor 6, the test specimen 1 that need test is arranged between hydraulic jack 7 and moveable hinge bearing A4, steel cushion block 5 is placed on moveable hinge bearing A4 top, promoting hydraulic jack 7 makes steel cushion block 5 touch girder steel 10, controlled loading, makes hydraulic jack 7 only bear the deadweight of test specimen 1;

(c) connecting test device: at the fiber cloth 2 surface mount foil gauge 15 of concrete test block 1, foil gauge 15 is connected with stationary singnal testing and analyzing system 21 by wire 17; Force snesor 6 is connected with stationary singnal detecting and analysing system 21 by signal wire 16; Stationary singnal detecting and analysing system 21 output terminal is connected with computing machine 18;

D () tests: to hydraulic jack 7 load application, open stationary singnal testing and analyzing system 21, and zeroing, records the strain stress of test block 1 surface fiber sheet 2 in loading procedure by Static Test and Analysis system 21 (t)and corresponding vertical load P (t);

E () is according to ε (t)and P (t)obtain load-displacement curve, test completes.

More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (8)

1. measure the proving installation of FRP-concrete interface adhesive property, it is characterized in that: comprise outside framework (20), hydraulic jack (7), hydraulic oil pump (19) and test specimen (1), force snesor (6), stationary singnal detecting and analysing system (21) and computing machine (18); Described outside framework (20) is made up of left girder steel (11), right girder steel (12), upper girder steel (10) and lower girder steel (13); Described lower girder steel (13) is upper installs moveable hinge bearing B (19); Described hydraulic jack (7) is installed on described moveable hinge bearing B (19), and hydraulic jack (7) is connected with hydraulic oil pump (9) by oil pipe (8); The upper installing force sensor (6) of described hydraulic jack (7); This force snesor (6) is connected with stationary singnal detecting and analysing system (21) by signal wire (16); Moveable hinge bearing A (4) is installed in described test specimen (1) upper end, and test specimen (1) is arranged between moveable hinge bearing A (4) and hydraulic jack (7);
Described test specimen (1) surface mount fibre plate (2); Fibre plate (2) surface mount foil gauge (15); Foil gauge (15) is connected with stationary singnal detecting and analysing system (21) by wire (17); The output terminal of stationary singnal detecting and analysing system (21) is connected with computing machine (18).
2. the proving installation of mensuration FRP-concrete interface adhesive property according to claim 1, is characterized in that: described outside framework (20) is formed by connecting by high-strength bolt (14) by left girder steel (11), right girder steel (12), upper girder steel (10) and lower girder steel (13).
3. the proving installation of mensuration FRP-concrete interface adhesive property according to claim 1, is characterized in that: described moveable hinge bearing A (4) is provided with the steel cushion block (5) for the protection of upper girder steel (10).
4. the proving installation of mensuration FRP-concrete interface adhesive property according to claim 1, it is characterized in that: described proving installation is provided with 2 moveable hinge bearing A (4), and 2 moveable hinge bearing A (4) are separately positioned on the two ends of test specimen (1).
5. the proving installation of mensuration FRP-concrete interface adhesive property according to claim 1, is characterized in that: test specimen (1) middle part is cut and established gap (3).
6. the proving installation of mensuration FRP-concrete interface adhesive property according to claim 5, is characterized in that: the width of described gap (3) is 49-52mm, and the degree of depth is 48-52mm.
7. the proving installation of mensuration FRP-concrete interface adhesive property according to claim 6, is characterized in that: the width of described gap (3) is 50mm, and the degree of depth is 50mm.
8. adopt a method of testing for the proving installation of mensuration FRP-concrete interface adhesive property according to claim 1, it is characterized in that: comprise the steps:
The preparation of (a) test specimen: the concrete sample of making, concrete sample surface mount fibre plate (2);
(b) assembling charger: moveable hinge bearing B (19) is placed on lower girder steel (13), hydraulic jack (7) is placed on moveable hinge bearing B (19), to hydraulic jack (7) installing force sensor (6), the test specimen (1) that need test is arranged between hydraulic jack (7) and moveable hinge bearing A (4), steel cushion block (5) is placed on moveable hinge bearing A (4) top, promoting hydraulic jack (7) makes steel cushion block (5) touch girder steel (10), controlled loading, hydraulic jack (7) is made only to bear the deadweight of test specimen (1),
(c) connecting test device: at fiber cloth (2) the surface mount foil gauge (15) of concrete test block (1), foil gauge (15) is connected with stationary singnal testing and analyzing system (21) by wire (17); Force snesor (6) is connected with stationary singnal detecting and analysing system (21) by signal wire (16); Stationary singnal detecting and analysing system (21) output terminal is connected with computing machine (18);
D () tests: to hydraulic jack (7) load application, open stationary singnal testing and analyzing system (21), zeroing, by the strain stress of test block (1) surface fiber sheet (2) in Static Test and Analysis system (21) record loading procedure (t)and corresponding vertical load P (t);
E () is according to ε (t)and P (t)obtain load-displacement curve, test completes.
CN201510209463.3A 2015-04-29 2015-04-29 FRP-concrete interface adhesive property testing device and method CN104777097A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510209463.3A CN104777097A (en) 2015-04-29 2015-04-29 FRP-concrete interface adhesive property testing device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510209463.3A CN104777097A (en) 2015-04-29 2015-04-29 FRP-concrete interface adhesive property testing device and method

Publications (1)

Publication Number Publication Date
CN104777097A true CN104777097A (en) 2015-07-15

Family

ID=53618706

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510209463.3A CN104777097A (en) 2015-04-29 2015-04-29 FRP-concrete interface adhesive property testing device and method

Country Status (1)

Country Link
CN (1) CN104777097A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104807707A (en) * 2015-04-29 2015-07-29 江苏城市职业学院 Testing device and testing method for determining double-side shear performance of FRP (Fiber Reinforced Plastic)-concrete
CN106644761A (en) * 2016-12-14 2017-05-10 大连理工大学 Testing method for testing shearing constitutive relation of rock-concrete interface
CN107655925A (en) * 2017-08-22 2018-02-02 南昌大学 Organic/inorganic composite material interface shrinkage test device and method
CN108693110A (en) * 2018-08-01 2018-10-23 北方工业大学 A kind of sliding test device and FRP sheet materials and concrete binding pilot system
CN108918264A (en) * 2018-06-29 2018-11-30 上海市建筑科学研究院 Assembled integral concrete construction sealing material filleting adhesive property detection method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2653225A1 (en) * 1989-09-29 1991-04-19 Lhd Lab Hygiene Dietetique Device for applying an adhesive shape, especially for the skin, or for measuring its adhesive power
JP2006126139A (en) * 2004-11-01 2006-05-18 Furukawa Alflex Corp Apparatus and method for measuring film adhesive force
CN102507439A (en) * 2011-11-23 2012-06-20 河海大学 Testing device and method for directly testing adhesive property between early-age concrete and reinforcing steel bars
CN103234902A (en) * 2013-04-23 2013-08-07 金陵科技学院 Device and method for testing adhesive property between fiber reinforce plastic (FRP) rib and concrete under complicated stress state
CN203396690U (en) * 2013-07-19 2014-01-15 郑州大学 Carbon fiber cloth-concrete interface adhesive property test device based on beam type test piece
CN103983525A (en) * 2014-05-30 2014-08-13 江苏城市职业学院 Testing device and method for testing fiber reinforce plastic (FRP)-concrete single shear performance

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2653225A1 (en) * 1989-09-29 1991-04-19 Lhd Lab Hygiene Dietetique Device for applying an adhesive shape, especially for the skin, or for measuring its adhesive power
JP2006126139A (en) * 2004-11-01 2006-05-18 Furukawa Alflex Corp Apparatus and method for measuring film adhesive force
CN102507439A (en) * 2011-11-23 2012-06-20 河海大学 Testing device and method for directly testing adhesive property between early-age concrete and reinforcing steel bars
CN103234902A (en) * 2013-04-23 2013-08-07 金陵科技学院 Device and method for testing adhesive property between fiber reinforce plastic (FRP) rib and concrete under complicated stress state
CN203396690U (en) * 2013-07-19 2014-01-15 郑州大学 Carbon fiber cloth-concrete interface adhesive property test device based on beam type test piece
CN103983525A (en) * 2014-05-30 2014-08-13 江苏城市职业学院 Testing device and method for testing fiber reinforce plastic (FRP)-concrete single shear performance

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
卢渊: "冲击荷载下GFRP-混凝土界面粘结力学性能试验研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 *
天津大学土木工程系编: "《一级注册结构工程师执业资格考试专业基础考试复习教程》", 31 October 2013, 天津大学出版社 *
郭樟根,孙伟民,曹双寅: "FR P 与混凝土界面黏结-滑移本构关系的试验研究", 《土木工程学报》 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104807707A (en) * 2015-04-29 2015-07-29 江苏城市职业学院 Testing device and testing method for determining double-side shear performance of FRP (Fiber Reinforced Plastic)-concrete
CN106644761A (en) * 2016-12-14 2017-05-10 大连理工大学 Testing method for testing shearing constitutive relation of rock-concrete interface
CN106644761B (en) * 2016-12-14 2019-11-19 大连理工大学 A kind of test method of measurement rock-concrete interface shearing constitutive relation
CN107655925A (en) * 2017-08-22 2018-02-02 南昌大学 Organic/inorganic composite material interface shrinkage test device and method
CN108918264A (en) * 2018-06-29 2018-11-30 上海市建筑科学研究院 Assembled integral concrete construction sealing material filleting adhesive property detection method
CN108693110A (en) * 2018-08-01 2018-10-23 北方工业大学 A kind of sliding test device and FRP sheet materials and concrete binding pilot system

Similar Documents

Publication Publication Date Title
KR101832207B1 (en) Clamps Tensile Tester
Contamine et al. Contribution to direct tensile testing of textile reinforced concrete (TRC) composites
Aiello et al. Bond analysis of masonry structures strengthened with CFRP sheets
Han et al. Localization of acoustic emission sources in structural health monitoring of masonry bridge
CN101685039B (en) Method for testing field ground load calibration of airplane wing and calibration device thereof
Qiu et al. Investigating self healing behaviour of pure bitumen using dynamic shear rheometer
CN105954103B (en) Ground surface material stretching, compression, curved drawing modulus of resilience synchronous testing device and method
Capozucca Static and dynamic response of damaged RC beams strengthened with NSM CFRP rods
CN106404543A (en) Prestressed carbon fiber plate anchor test device
Jorge et al. Time-dependent behaviour of timber lightweight concrete composite floors
CN102539319B (en) Device and method for directly testing bonding performance of concrete and reinforcing steel bar under action of reciprocating load
Lenwari et al. Debonding strength of steel beams strengthened with CFRP plates
CN104897479B (en) A kind of composite support insulator mechanical property comprehensive detection system
Binda et al. Flat-Jack Test: A slightly destructive technique for the diagnosis of brick and stone masonry structures
CN102052935B (en) Single tower cable-stayed bridge model test system based on damage identification
Jankowski et al. Experimental assessment of CFRP reinforced wooden beams by 4-point bending tests and photoelastic coating technique
Realfonzo et al. Experimental investigation of the mechanical connection between FRP laminates and concrete
Grande et al. Bond behaviour of CFRP laminates glued on clay bricks: experimental and numerical study
Ivanović et al. Modelling of debonding along the fixed anchor length
CN103323340B (en) Mechanical property test device and method of steel-concrete contact interface
Mashiri et al. Stress concentration factors and fatigue behaviour of welded thin-walled CHS–SHS T-joints under in-plane bending
US9423330B2 (en) Method of determining the non-propagation threshold of fatigue cracks at high frequency
Adam et al. Behaviour of axially loaded RC columns strengthened by steel angles and strips
Keller et al. Adhesively bonded lap joints from pultruded GFRP profiles. Part II: joint strength prediction
Akbar et al. Derivation of the bond–slip characteristics for FRP plated steel members

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20150715